Easton's Bible Dictionary Leaving, one of Abraham's sons by Keturah (Genesis 25:2). Int. Standard Bible Encyclopedia ISHBAK ish'-bak (yishbaq): A name in the list of sons of Abraham by Keturah (Genesis 25:2 parallel 1 Chronicles 1:32). These names probably represent tribes; the tribe of Ishbak has not been certainly identified.

Multi-Version Concordance Ishbak (2 Occurrences) Genesis 25:2 She bore him Zimran, Jokshan, Medan, Midian, Ishbak, and Shuah. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV) 1 Chronicles 1:32 The sons of Keturah, Abraham's concubine: she bore Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. The sons of Jokshan: Sheba, and Dedan. (WEB KJV JPS ASV BBE DBY WBS YLT NAS RSV NIV)